Integrated Tug Barge

Independent Tank, Center

International Tonnage Convention

International Trade Commission

International Transport Workers Federation

A schedule of all ports to be visited on a ship's cruise, with dates of arrival and departure and the local agents' names and addresses

Route/Schedule

International Tanker Owners Pollution Federation

International Telecomunication Union

Independent Tank, Wing

Iraqi Territorial Water Services.

Independent Tank, Common

Inshore Traffic Zone. Navigational lane which lies between a TSS and the coast. Can only be used by ships calling a port or place inside the zone.

If Used

International Underwiting Association

If Used, Half Time Actually to Count

International Union of Marine Insurance

A small pointer extending downward from the top of the cistern of a Fortin barometer. The level of the mercury in the cistern is adjusted so that it just comes in contact with the end of the pointer, thus setting the zero of the barometric scale.

Institute Warrant Limits

In Water Survey